Lindsay Lohan beat out
Blake Lively AND
Sienna Miller for her new role as
Victoria Gotti -- and TMZ has learned ... Victoria herself made sure that happened.

Sources close to the production tell TMZ, producers were considering both Blake and Sienna for the role -- but John Gotti's famously blonde daughter wasn't having it, insisting Lindsay get the role instead ... and producers loved the idea.
Not all that surprising -- according to sources, Victoria is a good friend of the Lohan family ... and she often spends time with them on Long Island.
Meanwhile, Lindsay is currently in L.A. auditioning for "
Superman" -- but we're told she already has a plane ticket back to NYC for April 12th ... to close the Gotti deal for good.
Jude Law and
Sienna Miller cooled off their on-again, off-again, on-again relationship ... on the beaches of Barbados this weekend.

Looking this hot is elementary, my dear Watson.
Apparently she's back with
Jude Law.

The two were spotted taking a carriage ride in Central Park the other day.
And that was your Sienna Miller Dating Update.
Sienna Miller finally hooked up with a man out-of-wedlock ... in a good way.

The dude taking down
Balthazar Getty's sloppy seconds is
DJ Slinky Wizard -- who also goes by his birth name, George Baker.
The two did what Sienna does best while on vacation in Ibiza -- PDA.
No word if the Slinky Wizard turned any tricks while on the boat.
Sienna Miller went absolutely ballistic on some Australian radio DJ this morning -- blasting the guy for bringing up one hell of a touchy subject ... Balthazar Getty.
"
The Fabulous"
Adam Richard of Australia's "
Matt & Jo Show" found an ingenious way to bring up
Getty during an interview with Miller and co-star
Rachel Nichols for their new movie -- and even though it was all over the phone, you can still see the fire in Sienna's eyes.
To her credit, Miller didn't hang up -- she stuck through it and finished the interview.
The days of making out with a hot, topless, 27-year-old
Sienna Miller in an Italian chateau are long gone -- now
Balthazar Getty is back in the real world, tending to his brood and trying to find the meaning of life in a pack of theater-bought Goobers.

But give the dude his props -- he's a real good dad.
Aiming for dad of the year,
Balthazar Getty's "repair my family" tour just hit a speed bump -- he got pulled over by cops with his children in the car.

The actor was out with the fam (minus wife Rosetta) in Malibu yesterday when he was stopped for a traffic violation. First
Sienna Miller, now this.
Good work pops.
A cash-strapped Balthazar Getty was walking down Sunset Blvd. yesterday, when the typical Sienna Miller convo was interrupted by those kids on the street who try to sell you candy.

Lucky for Getty and the kids -- our pap had some extra cash to help out.
Balthazar Getty may be
a philanderer, but at least he's a gainfully employed one ... so he claimed at LAX yesterday, addressing reports he was sacked by "Brothers & Sisters" producers after hitting the sack with Sienna Miller.
With his wife and four children nowhere in sight, Balthazar Getty headed down to Mexico with his lover Sienna Miller.

Hopefully 2009 will be a better year ... for Balthazar's wife!